当前位置：网站首页>[Unity3D] Beginner Encryption Skills (Anti-Cracking)

前提概要：
        需要加密的文件：
        xxx_Data\Managed\Assembly-CSharp.dll（核心dll）
        Where there is encryption, there is decryption,The decryption process is put into read parsingdll时,文件：         MonoBleedingEdge\EmbedRuntime\mono-2.0-bdwgc.dll

开始进入windowEncrypted production process：主要参考Unity 2019.4.0 Mono 编译以及加密 windows版_雾凇|Songs的博客-CSDN博客

① Cygwin 安装Cygwin

下载setup-x86_64.exe安装软件,打开cmd,先cd到setup-x86_64.exe所在目录执行.

setup-x86_64.exe -P autoconf,automake,bison,gcc-core,gcc-g++,mingw64-i686-runtime,mingw64-i686-binutils,mingw64-i686-gcc-core,mingw64-i686-gcc-g++,mingw64-i686-pthreads,mingw64-i686-w32api,mingw64-x86_64-runtime,mingw64-x86_64-binutils,mingw64-x86_64-gcc-core,mingw64-x86_64-gcc-g++,mingw64-x86_64-pthreads,mingw64-x86_64-w32api,libtool,make,python,gettext-devel,gettext,intltool,libiconv,pkg-config,git,curl,wget,libxslt,bc,patch,cmake,perl,yasm,unzip

The process probably is10分钟左右,Because it downloads a bunch of required files,耐心等待.It will give you choices along the way2export directory,默认C盘,Other drive letters are optional,安装完毕后,It will be there in the first export directory of your choiceCygwin.bat（also appears on the desktopCygwin64 Terminal应用图标）Executing it will open a command line window,Represents normal completion.

2022年8月1日更新：安装Mono环境

https://www.mono-project.com/docs/getting-started/install/windows/

安装完毕后按wins键（左下角开始）输入mono搜出

输入mono --version执行成功,注意这个C:\Program Files\Mono并不是一个文件,而是MonoEnvironment command line form.

② git clone unity-mono源码工程（It is said on the Internet that it is necessary to choose the correspondingUnity版本,未测试）

GitHub - Unity-Technologies/mono: Mono open source ECMA CLI, C# and .NET mplementation.

如果你是2019.4+的版本,Then choose the above2019.4-branch-updates分支克隆,git命令如下：

git clone --recursive -b 2019.4-branch-updates https://github.com/Unity-Technologies/mono.git

Mirroring is needed in the countryclone才会比较快,So mirroring uses related articles：

git clone 换源 / GitHub 国内镜像_A blog that adds more soup to noodles-CSDN博客_github国内镜像源

本人使用https://gitclone.com git命令更改为：

git clone --recursive -b 2019.4-branch-updates https://gitclone.com/Unity-Technologies/mono.git

克隆完成后,打开①安装的CygwinCommand Form program,cd到②克隆到本地的mono工程目录下,执行

cd d:/xxx/mono/

区分64和32位window系统执行命令：

64位

./autogen.sh --prefix=$PREFIX --host=x86_64-w64-mingw32 --enable-msvc --disable-boehm

32位

./autogen.sh --prefix=$PREFIX --host=i686-w64-mingw32 --enable-msvc --disable-boehm

等待编译完成,它会将monoThe project is compiled and output to Cygwin.bat文件所在目录下的\home\计算机名\mono文件夹下【Cygwin.bat是CygwinThe command form program executesbat文件】

Cygwin目录：Cygwin.bat所在目录
mono目录：Cygwin目录\home\计算机名\mono\

③ 使用Visual Studio 2019打开mono目录下的\msvc\mono.sln生成解密文件

If you can't find it, just search for the filemono.sln

There may be some red flags in the generation process,But it doesn't seem to affect the completion of the process to get the documents we need：

If it fails, you will not see the file below,只有mono-2.0-dac-bdwgc.dll,We want to bemono-2.0-bdwgc.dll

mono目录下\msvc\build\bdwgc\x64\bin\Release\mono-2.0-bdwgc.dll

将它替换掉MonoBleedingEdge\EmbedRuntime\mono-2.0-bdwgc.dll

加密dll代码：

string path = @"E:\xxx_Data\Managed\Assembly-CSharp.dll";
byte[] bytes = File.ReadAllBytes(path);
bytes[0] += 1;

//If you want to verify whether the encryption was successful,可使用dnSpy神器
//string outPath = @"E:\xxx_Data\Managed\Assembly-CSharp_dec.dll";
string outPath = path;
File.WriteAllBytes(outPath, bytes);

加密后的dllIt just can't be cracked temporarily,Because the decryption method is theremono-2.0-bdwgc.dll,Someone else just cracks thisdllknow the decryption method,Then decrypt what you have encrypteddll.

Unity3D研究院之Android二次加密.so二次加密DLL（八十二） | 雨松MOMO程序研究院

Yusong articles are all Androiddll加密和解密,Android decryption file islibmono.so,iOSNot yet contacted.

2. Android工程

① 、② 与Window工程相同
③ 使用CygwinThe command form program executes

cd d:/xxx/mono/
./external/buildscripts/build_runtime_android.sh

Find it when donelibmono.so,将它放入.apk文件里的\lib\armeabi-v7a\下（如果lib还有其他的armxxxThe directory should also be placed accordinglyarnxxx\libmono.so文件,libmono.soThere will also be correspondencelib一样的armxxx目录的,Do not select the wrong file to put in.

I have tested the current Android project and haven't tried to compile it yet,windowWorks using the provided below articlemonoEngineering testing is possible,But the android test goes to compilebuild_runtime_android.sh失败Unity 代码加密 Mono Compile and encrypt windows版_雾凇|Songs的博客-CSDN博客_unity代码加密

失败记录：

最关键的一点是git clone下的monoThe project must be complete,不要去zip下载git工程,I just suspectgit cloneCommand line downloads are too slow,Download directly over the wallzip,As a result, after a long time, there are still various errors and missing files,Check and find that you can download directlyzip,The files are missing a lot,比如：mono-unity-2021.2-mbe-pre-upgrade\external\bdwgc文件夹是空的！Subsequent updates can compile normally.

编译Unity使用的libmono.so - K1_大大 - 博客园

The biggest problem is that all articles are not introduced2017之后的libmono.so的制作,基本上都有build_runtime_android.sh和 build_runtime_android_x86.sh And there's a lot of content in it,There are many things changed,反正这x86.sh 只在2017seen in previous versions,And the content is relatively consistent,由于githubCloning consistently has network issues,And did not find the relevant library to provide,Temporarily give up,Basically see the aboveK1_Great article to achieve compilationlibmono.so解密文件.哎,githubThe link reference library is really drunk,And the domestic wall,Unstable image,This all stops me from going on,但不用担心,Unity自从出了IL2CPP,C#Layer encryption should be sound.

二、热更代码&资源加密

没啥好说的,It's simple binary file encryption,基本上都是assetbundleEncrypt the package,After encryption, decryption loads normallyab包即可,哎,Anyway, just do it,After all, decryption is on the client side.